docs: add PineScript links to all indicator .md files, docsify .pine renderer with comprehensive Prism v6 syntax highlighting

- Added PineScript row to property tables in 375 .md files linking to companion .pine files
- Docsify plugin intercepts .pine link clicks, fetches and renders content as syntax-highlighted code blocks
- Comprehensive Prism.languages.pine grammar covering 18 token categories: annotations, types, qualifiers, namespaces, OHLCV builtins, functions, keywords, operators
- Custom CSS tokens using GitHub dark palette for Pine-specific visual differentiation

lib/volatility/yzv/Yzv.md

@@ -8,8 +8,7 @@
 | **Outputs**      | Single series (Yzv)                       |
 | **Output range** | $\geq 0$                     |
 | **Warmup**       | `period` bars                          |
-
-### TL;DR
+| **PineScript**   | [yzv.pine](yzv.pine)                       |
 
 - Yang-Zhang Volatility is a sophisticated volatility estimator that combines overnight (close-to-open) returns with Rogers-Satchell intraday volatil...
 - Parameterized by `period` (default 20).

lib/volatility/yzv/yzv.pine

@@ -27,7 +27,7 @@ yzv(int length) =>
             raw_rma_val := (nz(raw_rma_val[1]) * (length - 1) + s_sq_daily) / length
         e_comp_val := (1.0 - rma_alpha) * e_comp_val
         smoothed_s_sq := e_comp_val > EPSILON_YZV ? raw_rma_val / (1.0 - e_comp_val) : raw_rma_val
-    result = math.sqrt(smoothed_s_sq)
+    result = math.sqrt(math.max(0.0, nz(smoothed_s_sq)))
     result
 
 // Inputs